index.js

    return [domain];
  }

  var prefix = domain.slice(0, -(pubSuf.length + 1)); // ".example.com"
  var parts = prefix.split('.').reverse();
  var cur = pubSuf;
  var permutations = [cur];
  while (parts.length) {
    cur = parts.shift() + '.' + cur;
    permutations.push(cur);
  }
  return permutations;
}

exports.permuteDomain = permuteDomain;


/***/ }),
/* 90 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
/*!
 * Copyright (c) 2015, Salesforce.com, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * 3. Neither the name of Salesforce.com nor the names of its contributors may
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * "A request-path path-matches a given cookie-path if at least one of the
 * following conditions holds:"
 */
function pathMatch (reqPath, cookiePath) {
  // "o  The cookie-path and the request-path are identical."
  if (cookiePath === reqPath) {
    return true;
  }

  var idx = reqPath.indexOf(cookiePath);
  if (idx === 0) {
    // "o  The cookie-path is a prefix of the request-path, and the last
    // character of the cookie-path is %x2F ("/")."
    if (cookiePath.substr(-1) === "/") {
      return true;
    }

    // " o  The cookie-path is a prefix of the request-path, and the first
    // character of the request-path that is not included in the cookie- path
    // is a %x2F ("/") character."
    if (reqPath.substr(cookiePath.length, 1) === "/") {
      return true;
    }
  }

  return false;
}

exports.pathMatch = pathMatch;


/***/ }),
/* 91 */
/***/ (function(module, exports) {

// generated by genversion
module.exports = '2.5.0'


/***/ }),
/* 92 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


var jsonSafeStringify = __webpack_require__(7)
var crypto = __webpack_require__(93)
var Buffer = __webpack_require__(94).Buffer

var defer = typeof setImmediate === 'undefined'
  ? process.nextTick
  : setImmediate

function paramsHaveRequestBody (params) {
  return (
    params.body ||
    params.requestBodyStream ||
    (params.json && typeof params.json !== 'boolean') ||
    params.multipart
  )
}

function safeStringify (obj, replacer) {
  var ret
  try {
    ret = JSON.stringify(obj, replacer)
  } catch (e) {
    ret = jsonSafeStringify(obj, replacer)
  }
  return ret
}

function md5 (str) {
  return crypto.createHash('md5').update(str).digest('hex')
}

function isReadStream (rs) {
  return rs.readable && rs.path && rs.mode
}

function toBase64 (str) {
  return Buffer.from(str || '', 'utf8').toString('base64')
}

function copy (obj) {
  var o = {}
  Object.keys(obj).forEach(function (i) {
    o[i] = obj[i]
  })
  return o
}

function version () {
  var numbers = process.version.replace('v', '').split('.')
  return {
    major: parseInt(numbers[0], 10),
    minor: parseInt(numbers[1], 10),
    patch: parseInt(numbers[2], 10)
  }
}

exports.paramsHaveRequestBody = paramsHaveRequestBody
exports.safeStringify = safeStringify
exports.md5 = md5
exports.isReadStream = isReadStream
exports.toBase64 = toBase64
exports.copy = copy
exports.version = version
exports.defer = defer


/***/ }),
/* 93 */
/***/ (function(module, exports) {

module.exports = require("crypto");

/***/ }),
/* 94 */
/***/ (function(module, exports, __webpack_require__) {

/* eslint-disable node/no-deprecated-api */
var buffer = __webpack_require__(95)
var Buffer = buffer.Buffer

// alternative to using Object.keys for old browsers
function copyProps (src, dst) {
  for (var key in src) {
    dst[key] = src[key]
  }
}
if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {
  module.exports = buffer
} else {
  // Copy properties from require('buffer')
  copyProps(buffer, exports)
  exports.Buffer = SafeBuffer
}

function SafeBuffer (arg, encodingOrOffset, length) {
  return Buffer(arg, encodingOrOffset, length)
}

// Copy static methods from Buffer
copyProps(Buffer, SafeBuffer)

SafeBuffer.from = function (arg, encodingOrOffset, length) {
  if (typeof arg === 'number') {
    throw new TypeError('Argument must not be a number')
  }
  return Buffer(arg, encodingOrOffset, length)
}

SafeBuffer.alloc = function (size, fill, encoding) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  var buf = Buffer(size)
  if (fill !== undefined) {
    if (typeof encoding === 'string') {
      buf.fill(fill, encoding)
    } else {
      buf.fill(fill)
    }
  } else {
    buf.fill(0)
  }
  return buf
}

SafeBuffer.allocUnsafe = function (size) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  return Buffer(size)
}

SafeBuffer.allocUnsafeSlow = function (size) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  return buffer.SlowBuffer(size)
}


/***/ }),
/* 95 */
/***/ (function(module, exports) {

module.exports = require("buffer");

/***/ }),
/* 96 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


var http = __webpack_require__(97)
var https = __webpack_require__(98)
var url = __webpack_require__(82)
var util = __webpack_require__(9)
var stream = __webpack_require__(99)
var zlib = __webpack_require__(100)
var aws2 = __webpack_require__(101)
var aws4 = __webpack_require__(102)
var httpSignature = __webpack_require__(105)
var mime = __webpack_require__(156)
var caseless = __webpack_require__(160)
var ForeverAgent = __webpack_require__(161)
var FormData = __webpack_require__(163)
var extend = __webpack_require__(78)
var isstream = __webpack_require__(182)
var isTypedArray = __webpack_require__(183).strict
var helpers = __webpack_require__(92)
var cookies = __webpack_require__(79)
var getProxyFromURI = __webpack_require__(184)
var Querystring = __webpack_require__(185).Querystring
var Har = __webpack_require__(191).Har
var Auth = __webpack_require__(260).Auth
var OAuth = __webpack_require__(264).OAuth
var hawk = __webpack_require__(266)
var Multipart = __webpack_require__(267).Multipart
var Redirect = __webpack_require__(268).Redirect
var Tunnel = __webpack_require__(269).Tunnel
var now = __webpack_require__(272)
var Buffer = __webpack_require__(94).Buffer

var safeStringify = helpers.safeStringify
var isReadStream = helpers.isReadStream
var toBase64 = helpers.toBase64
var defer = helpers.defer
var copy = helpers.copy
var version = helpers.version
var globalCookieJar = cookies.jar()

var globalPool = {}

function filterForNonReserved (reserved, options) {
  // Filter out properties that are not reserved.
  // Reserved values are passed in at call site.

  var object = {}
  for (var i in options) {
    var notReserved = (reserved.indexOf(i) === -1)
    if (notReserved) {
      object[i] = options[i]
    }
  }
  return object
}

function filterOutReservedFunctions (reserved, options) {
  // Filter out properties that are functions and are reserved.
  // Reserved values are passed in at call site.

  var object = {}
  for (var i in options) {
    var isReserved = !(reserved.indexOf(i) === -1)
    var isFunction = (typeof options[i] === 'function')
    if (!(isReserved && isFunction)) {
      object[i] = options[i]
    }
  }
  return object
}

// Return a simpler request object to allow serialization
function requestToJSON () {
  var self = this
  return {
    uri: self.uri,
    method: self.method,
    headers: self.headers
  }
}

// Return a simpler response object to allow serialization
function responseToJSON () {
  var self = this
  return {
    statusCode: self.statusCode,
    body: self.body,
    headers: self.headers,
    request: requestToJSON.call(self.request)
  }
}

function Request (options) {
  // if given the method property in options, set property explicitMethod to true

  // extend the Request instance with any non-reserved properties
  // remove any reserved functions from the options object
  // set Request instance to be readable and writable
  // call init

  var self = this

  // start with HAR, then override with additional options
  if (options.har) {
    self._har = new Har(self)
    options = self._har.options(options)
  }

  stream.Stream.call(self)
  var reserved = Object.keys(Request.prototype)
  var nonReserved = filterForNonReserved(reserved, options)

  extend(self, nonReserved)
  options = filterOutReservedFunctions(reserved, options)

  self.readable = true
  self.writable = true
  if (options.method) {
    self.explicitMethod = true
  }
  self._qs = new Querystring(self)
  self._auth = new Auth(self)
  self._oauth = new OAuth(self)
  self._multipart = new Multipart(self)
  self._redirect = new Redirect(self)
  self._tunnel = new Tunnel(self)
  self.init(options)
}

util.inherits(Request, stream.Stream)

// Debugging
Request.debug = process.env.NODE_DEBUG && /\brequest\b/.test(process.env.NODE_DEBUG)
function debug () {
  if (Request.debug) {
    console.error('REQUEST %s', util.format.apply(util, arguments))
  }
}
Request.prototype.debug = debug

Request.prototype.init = function (options) {
  // init() contains all the code to setup the request object.
  // the actual outgoing request is not started until start() is called
  // this function is called from both the constructor and on redirect.
  var self = this
  if (!options) {
    options = {}
  }
  self.headers = self.headers ? copy(self.headers) : {}

  // Delete headers with value undefined since they break
  // ClientRequest.OutgoingMessage.setHeader in node 0.12
  for (var headerName in self.headers) {
    if (typeof self.headers[headerName] === 'undefined') {
      delete self.headers[headerName]
    }
  }

  caseless.httpify(self, self.headers)

  if (!self.method) {
    self.method = options.method || 'GET'
  }
  if (!self.localAddress) {
    self.localAddress = options.localAddress
  }

  self._qs.init(options)

  debug(options)
  if (!self.pool && self.pool !== false) {
    self.pool = globalPool
  }
  self.dests = self.dests || []
  self.__isRequestRequest = true

  // Protect against double callback
  if (!self._callback && self.callback) {
    self._callback = self.callback
    self.callback = function () {
      if (self._callbackCalled) {
        return // Print a warning maybe?
      }
      self._callbackCalled = true
      self._callback.apply(self, arguments)
    }
    self.on('error', self.callback.bind())
    self.on('complete', self.callback.bind(self, null))
  }

  // People use this property instead all the time, so support it
  if (!self.uri && self.url) {
    self.uri = self.url
    delete self.url
  }

  // If there's a baseUrl, then use it as the base URL (i.e. uri must be
  // specified as a relative path and is appended to baseUrl).
  if (self.baseUrl) {
    if (typeof self.baseUrl !== 'string') {
      return self.emit('error', new Error('options.baseUrl must be a string'))
    }

    if (typeof self.uri !== 'string') {
      return self.emit('error', new Error('options.uri must be a string when using options.baseUrl'))
    }

    if (self.uri.indexOf('//') === 0 || self.uri.indexOf('://') !== -1) {
      return self.emit('error', new Error('options.uri must be a path when using options.baseUrl'))
    }

    // Handle all cases to make sure that there's only one slash between
    // baseUrl and uri.
    var baseUrlEndsWithSlash = self.baseUrl.lastIndexOf('/') === self.baseUrl.length - 1
    var uriStartsWithSlash = self.uri.indexOf('/') === 0

    if (baseUrlEndsWithSlash && uriStartsWithSlash) {
      self.uri = self.baseUrl + self.uri.slice(1)
    } else if (baseUrlEndsWithSlash || uriStartsWithSlash) {
      self.uri = self.baseUrl + self.uri
    } else if (self.uri === '') {
      self.uri = self.baseUrl
    } else {
      self.uri = self.baseUrl + '/' + self.uri
    }
    delete self.baseUrl
  }

  // A URI is needed by this point, emit error if we haven't been able to get one
  if (!self.uri) {
    return self.emit('error', new Error('options.uri is a required argument'))
  }

  // If a string URI/URL was given, parse it into a URL object
  if (typeof self.uri === 'string') {
    self.uri = url.parse(self.uri)
  }

  // Some URL objects are not from a URL parsed string and need href added
  if (!self.uri.href) {
    self.uri.href = url.format(self.uri)
  }

  // DEPRECATED: Warning for users of the old Unix Sockets URL Scheme
  if (self.uri.protocol === 'unix:') {
    return self.emit('error', new Error('`unix://` URL scheme is no longer supported. Please use the format `http://unix:SOCKET:PATH`'))
  }

  // Support Unix Sockets
  if (self.uri.host === 'unix') {
    self.enableUnixSocket()
  }

  if (self.strictSSL === false) {
    self.rejectUnauthorized = false
  }

  if (!self.uri.pathname) { self.uri.pathname = '/' }

  if (!(self.uri.host || (self.uri.hostname && self.uri.port)) && !self.uri.isUnix) {
    // Invalid URI: it may generate lot of bad errors, like 'TypeError: Cannot call method `indexOf` of undefined' in CookieJar
    // Detect and reject it as soon as possible
    var faultyUri = url.format(self.uri)
    var message = 'Invalid URI "' + faultyUri + '"'
    if (Object.keys(options).length === 0) {
      // No option ? This can be the sign of a redirect
      // As this is a case where the user cannot do anything (they didn't call request directly with this URL)
      // they should be warned that it can be caused by a redirection (can save some hair)
      message += '. This can be caused by a crappy redirection.'
    }
    // This error was fatal
    self.abort()
    return self.emit('error', new Error(message))
  }

  if (!self.hasOwnProperty('proxy')) {
    self.proxy = getProxyFromURI(self.uri)
  }

  self.tunnel = self._tunnel.isEnabled()
  if (self.proxy) {
    self._tunnel.setup(options)
  }

  self._redirect.onRequest(options)

  self.setHost = false
  if (!self.hasHeader('host')) {
    var hostHeaderName = self.originalHostHeaderName || 'host'
    self.setHeader(hostHeaderName, self.uri.host)
    // Drop :port suffix from Host header if known protocol.
    if (self.uri.port) {
      if ((self.uri.port === '80' && self.uri.protocol === 'http:') ||
          (self.uri.port === '443' && self.uri.protocol === 'https:')) {
        self.setHeader(hostHeaderName, self.uri.hostname)
      }
    }
    self.setHost = true
  }

  self.jar(self._jar || options.jar)

  if (!self.uri.port) {
    if (self.uri.protocol === 'http:') { self.uri.port = 80 } else if (self.uri.protocol === 'https:') { self.uri.port = 443 }
  }

  if (self.proxy && !self.tunnel) {
    self.port = self.proxy.port
    self.host = self.proxy.hostname
  } else {
    self.port = self.uri.port
    self.host = self.uri.hostname
  }

  if (options.form) {
    self.form(options.form)
  }

  if (options.formData) {
    var formData = options.formData
    var requestForm = self.form()
    var appendFormValue = function (key, value) {
      if (value && value.hasOwnProperty('value') && value.hasOwnProperty('options')) {
        requestForm.append(key, value.value, value.options)
      } else {
        requestForm.append(key, value)
      }
    }
    for (var formKey in formData) {
      if (formData.hasOwnProperty(formKey)) {
        var formValue = formData[formKey]
        if (formValue instanceof Array) {
          for (var j = 0; j < formValue.length; j++) {
            appendFormValue(formKey, formValue[j])
          }
        } else {
          appendFormValue(formKey, formValue)
        }
      }
    }
  }

  if (options.qs) {
    self.qs(options.qs)
  }

  if (self.uri.path) {
    self.path = self.uri.path
  } else {
    self.path = self.uri.pathname + (self.uri.search || '')
  }

  if (self.path.length === 0) {
    self.path = '/'
  }

  // Auth must happen last in case signing is dependent on other headers
  if (options.aws) {
    self.aws(options.aws)
  }

  if (options.hawk) {
    self.hawk(options.hawk)
  }

  if (options.httpSignature) {
    self.httpSignature(options.httpSignature)
  }

  if (options.auth) {
    if (Object.prototype.hasOwnProperty.call(options.auth, 'username')) {
      options.auth.user = options.auth.username
    }
    if (Object.prototype.hasOwnProperty.call(options.auth, 'password')) {
      options.auth.pass = options.auth.password
    }

    self.auth(
      options.auth.user,
      options.auth.pass,
      options.auth.sendImmediately,
      options.auth.bearer
    )
  }

  if (self.gzip && !self.hasHeader('accept-encoding')) {
    self.setHeader('accept-encoding', 'gzip, deflate')
  }

  if (self.uri.auth && !self.hasHeader('authorization')) {
    var uriAuthPieces = self.uri.auth.split(':').map(function (item) { return self._qs.unescape(item) })
    self.auth(uriAuthPieces[0], uriAuthPieces.slice(1).join(':'), true)
  }

  if (!self.tunnel && self.proxy && self.proxy.auth && !self.hasHeader('proxy-authorization')) {
    var proxyAuthPieces = self.proxy.auth.split(':').map(function (item) { return self._qs.unescape(item) })
    var authHeader = 'Basic ' + toBase64(proxyAuthPieces.join(':'))
    self.setHeader('proxy-authorization', authHeader)
  }

  if (self.proxy && !self.tunnel) {
    self.path = (self.uri.protocol + '//' + self.uri.host + self.path)
  }

  if (options.json) {
    self.json(options.json)
  }
  if (options.multipart) {
    self.multipart(options.multipart)
  }

  if (options.time) {
    self.timing = true

    // NOTE: elapsedTime is deprecated in favor of .timings
    self.elapsedTime = self.elapsedTime || 0
  }

  function setContentLength () {
    if (isTypedArray(self.body)) {
      self.body = Buffer.from(self.body)
    }

    if (!self.hasHeader('content-length')) {
      var length
      if (typeof self.body === 'string') {
        length = Buffer.byteLength(self.body)
      } else if (Array.isArray(self.body)) {
        length = self.body.reduce(function (a, b) { return a + b.length }, 0)
      } else {
        length = self.body.length
      }

      if (length) {
        self.setHeader('content-length', length)
      } else {
        self.emit('error', new Error('Argument error, options.body.'))
      }
    }
  }
  if (self.body && !isstream(self.body)) {
    setContentLength()
  }

  if (options.oauth) {
    self.oauth(options.oauth)
  } else if (self._oauth.params && self.hasHeader('authorization')) {
    self.oauth(self._oauth.params)
  }

  var protocol = self.proxy && !self.tunnel ? self.proxy.protocol : self.uri.protocol
  var defaultModules = {'http:': http, 'https:': https}
  var httpModules = self.httpModules || {}

  self.httpModule = httpModules[protocol] || defaultModules[protocol]

  if (!self.httpModule) {
    return self.emit('error', new Error('Invalid protocol: ' + protocol))
  }

  if (options.ca) {
    self.ca = options.ca
  }

  if (!self.agent) {
    if (options.agentOptions) {
      self.agentOptions = options.agentOptions
    }

    if (options.agentClass) {
      self.agentClass = options.agentClass
    } else if (options.forever) {
      var v = version()
      // use ForeverAgent in node 0.10- only
      if (v.major === 0 && v.minor <= 10) {
        self.agentClass = protocol === 'http:' ? ForeverAgent : ForeverAgent.SSL
      } else {
        self.agentClass = self.httpModule.Agent
        self.agentOptions = self.agentOptions || {}
        self.agentOptions.keepAlive = true
      }
    } else {
      self.agentClass = self.httpModule.Agent
    }
  }

  if (self.pool === false) {
    self.agent = false
  } else {
    self.agent = self.agent || self.getNewAgent()
  }

  self.on('pipe', function (src) {
    if (self.ntick && self._started) {
      self.emit('error', new Error('You cannot pipe to this stream after the outbound request has started.'))
    }
    self.src = src
    if (isReadStream(src)) {
      if (!self.hasHeader('content-type')) {
        self.setHeader('content-type', mime.lookup(src.path))
      }
    } else {
      if (src.headers) {
        for (var i in src.headers) {
          if (!self.hasHeader(i)) {
            self.setHeader(i, src.headers[i])
          }
        }
      }
      if (self._json && !self.hasHeader('content-type')) {
        self.setHeader('content-type', 'application/json')
      }
      if (src.method && !self.explicitMethod) {
        self.method = src.method
      }
    }

  // self.on('pipe', function () {
  //   console.error('You have already piped to this stream. Pipeing twice is likely to break the request.')
  // })
  })

  defer(function () {
    if (self._aborted) {
      return
    }

    var end = function () {
      if (self._form) {
        if (!self._auth.hasAuth) {
          self._form.pipe(self)
        } else if (self._auth.hasAuth && self._auth.sentAuth) {
          self._form.pipe(self)
        }
      }
      if (self._multipart && self._multipart.chunked) {
        self._multipart.body.pipe(self)
      }
      if (self.body) {
        if (isstream(self.body)) {
          self.body.pipe(self)
        } else {
          setContentLength()
          if (Array.isArray(self.body)) {
            self.body.forEach(function (part) {
              self.write(part)
            })
          } else {
            self.write(self.body)
          }
          self.end()
        }
      } else if (self.requestBodyStream) {
        console.warn('options.requestBodyStream is deprecated, please pass the request object to stream.pipe.')
        self.requestBodyStream.pipe(self)
      } else if (!self.src) {
        if (self._auth.hasAuth && !self._auth.sentAuth) {
          self.end()
          return
        }
        if (self.method !== 'GET' && typeof self.method !== 'undefined') {
          self.setHeader('content-length', 0)
        }
        self.end()
      }
    }

    if (self._form && !self.hasHeader('content-length')) {
      // Before ending the request, we had to compute the length of the whole form, asyncly
      self.setHeader(self._form.getHeaders(), true)
      self._form.getLength(function (err, length) {
        if (!err && !isNaN(length)) {
          self.setHeader('content-length', length)
        }
        end()
      })
    } else {
      end()
    }

    self.ntick = true
  })
}

Request.prototype.getNewAgent = function () {
  var self = this
  var Agent = self.agentClass
  var options = {}
  if (self.agentOptions) {
    for (var i in self.agentOptions) {
      options[i] = self.agentOptions[i]
    }
  }
  if (self.ca) {
    options.ca = self.ca
  }
  if (self.ciphers) {
    options.ciphers = self.ciphers
  }
  if (self.secureProtocol) {
    options.secureProtocol = self.secureProtocol
  }
  if (self.secureOptions) {
    options.secureOptions = self.secureOptions
  }
  if (typeof self.rejectUnauthorized !== 'undefined') {
    options.rejectUnauthorized = self.rejectUnauthorized
  }

  if (self.cert && self.key) {
    options.key = self.key
    options.cert = self.cert
  }

  if (self.pfx) {
    options.pfx = self.pfx
  }

  if (self.passphrase) {
    options.passphrase = self.passphrase
  }

  var poolKey = ''

  // different types of agents are in different pools
  if (Agent !== self.httpModule.Agent) {
    poolKey += Agent.name
  }

  // ca option is only relevant if proxy or destination are https
  var proxy = self.proxy
  if (typeof proxy === 'string') {
    proxy = url.parse(proxy)
  }
  var isHttps = (proxy && proxy.protocol === 'https:') || this.uri.protocol === 'https:'

  if (isHttps) {
    if (options.ca) {
      if (poolKey) {
        poolKey += ':'
      }
      poolKey += options.ca
    }

    if (typeof options.rejectUnauthorized !== 'undefined') {
      if (poolKey) {
        poolKey += ':'
      }
      poolKey += options.rejectUnauthorized
    }

    if (options.cert) {
      if (poolKey) {
        poolKey += ':'
      }
      poolKey += options.cert.toString('ascii') + options.key.toString('ascii')
    }

    if (options.pfx) {
      if (poolKey) {
        poolKey += ':'
      }
      poolKey += options.pfx.toString('ascii')
    }

    if (options.ciphers) {
      if (poolKey) {
        poolKey += ':'
      }
      poolKey += options.ciphers
    }

    if (options.secureProtocol) {
      if (poolKey) {
        poolKey += ':'
      }
      poolKey += options.secureProtocol
    }

    if (options.secureOptions) {
      if (poolKey) {
        poolKey += ':'
      }
      poolKey += options.secureOptions
    }
  }

  if (self.pool === globalPool && !poolKey && Object.keys(options).length === 0 && self.httpModule.globalAgent) {
    // not doing anything special.  Use the globalAgent
    return self.httpModule.globalAgent
  }

  // we're using a stored agent.  Make sure it's protocol-specific
  poolKey = self.uri.protocol + poolKey

  // generate a new agent for this setting if none yet exists
  if (!self.pool[poolKey]) {
    self.pool[poolKey] = new Agent(options)
    // properly set maxSockets on new agents
    if (self.pool.maxSockets) {
      self.pool[poolKey].maxSockets = self.pool.maxSockets
    }
  }

  return self.pool[poolKey]
}

Request.prototype.start = function () {
  // start() is called once we are ready to send the outgoing HTTP request.
  // this is usually called on the first write(), end() or on nextTick()
  var self = this

  if (self.timing) {
    // All timings will be relative to this request's startTime.  In order to do this,
    // we need to capture the wall-clock start time (via Date), immediately followed
    // by the high-resolution timer (via now()).  While these two won't be set
    // at the _exact_ same time, they should be close enough to be able to calculate
    // high-resolution, monotonically non-decreasing timestamps relative to startTime.
    var startTime = new Date().getTime()
    var startTimeNow = now()
  }

  if (self._aborted) {
    return
  }

  self._started = true
  self.method = self.method || 'GET'
  self.href = self.uri.href

  if (self.src && self.src.stat && self.src.stat.size && !self.hasHeader('content-length')) {
    self.setHeader('content-length', self.src.stat.size)
  }
  if (self._aws) {
    self.aws(self._aws, true)
  }

  // We have a method named auth, which is completely different from the http.request
  // auth option.  If we don't remove it, we're gonna have a bad time.
  var reqOptions = copy(self)
  delete reqOptions.auth

  debug('make request', self.uri.href)

  // node v6.8.0 now supports a `timeout` value in `http.request()`, but we
  // should delete it for now since we handle timeouts manually for better
  // consistency with node versions before v6.8.0
  delete reqOptions.timeout